<template>
  <div class="cart" :key="component_key">
    <h4>全部商品</h4>
    <div class="cart-main">
      <div class="cart-th">
        <div class="cart-th1">全部</div>
        <div class="cart-th2">商品</div>
        <div class="cart-th3">单价（元）</div>
        <div class="cart-th4">数量</div>
        <div class="cart-th5">小计（元）</div>
        <div class="cart-th6">操作</div>
      </div>
      <div class="cart-body">
        <ul class="cart-list" v-for="item in shopCart_GoodsList" :key="item.id">
          <li class="cart-list-con1">
            <input @change="input_checkedChange(item.skuId, $event)" type="checkbox" :checked="item.isChecked === 1 ? true : false" name="chk_list" />
          </li>
          <li class="cart-list-con2">
            <img :src="item.imgUrl" />
            <div class="item-msg">{{ item.skuName }}</div>
          </li>
          <li class="cart-list-con4">
            <span class="price">{{ item.skuPrice || 0 }}</span>
          </li>
          <li class="cart-list-con5">
            <a href="javascript:void(0)" class="mins" @click="chang_goods_count('jian', item.skuId, item.skuNum)">-</a>
            <input
              ref="num_input"
              autocomplete="off"
              type="text"
              :value="item.skuNum"
              class="itxt"
              @blur="chang_goods_count('blur', item.skuId, item.skuNum, $event)"
            />
            <a href="javascript:void(0)" class="plus" @click="chang_goods_count('jia', item.skuId, item.skuNum)">+</a>
          </li>
          <li class="cart-list-con6">
            <span class="sum">{{ item.skuPrice * item.skuNum }}</span>
          </li>
          <li class="cart-list-con7">
            <a @click="del_goods(item.skuId)" class="sindelet">删除</a>
            <br />
            <a>移到收藏</a>
          </li>
        </ul>
      </div>
    </div>
    <div class="cart-tool">
      <div class="select-all">
        <input class="chooseAll" type="checkbox" @change="On_All_checkedChange" :checked="Is_All_active" />
        <span>全选</span>
      </div>
      <div class="option">
        <a @click="del_all_checkedGoods">删除选中的商品</a>
        <a>移到我的关注</a>
        <a>清除下柜商品</a>
      </div>
      <div class="money-box">
        <div class="chosed">
          已选择 <span>{{ active_sum_Goods }}</span
          >件商品
        </div>
        <div class="sumprice">
          <em>总价（不含运费） ：</em>
          <i class="summoney">{{ active_sum_price }}</i>
        </div>
        <div class="sumbtn">
          <a class="sum-btn" @click="Go_tradeinfo_onfun">结算</a>
        </div>
      </div>
    </div>
  </div>
</template>

<script>
const { throttle } = require('lodash')
import { mapActions, mapGetters } from 'vuex'
export default {
  name: 'ShopCart',
  data() {
    return {
      component_key: 0,
    }
  },
  computed: {
    ...mapGetters('shopcart', ['Is_All_active', 'shopCart_GoodsList', 'active_sum_Goods', 'active_sum_price']),
  },
  methods: {
    ...mapActions('shopcart', [
      'del_All_checked_goods',
      'Set_all_goods_checkedStatus',
      'get_shopCart_goodsList_obj',
      'add_shopGoods',
      'del_goods_inShopcart',
      'change_goodsChecked',
    ]),
    // 修改商品数量
    chang_goods_count: throttle(function (type, id, old_num, event) {
      let change_num = null
      if (type === 'jia') {
        change_num = 1
      } else if (type === 'jian') {
        change_num = old_num >= 2 ? -1 : 0
      } else {
        let value = event.target.value
        if (!(value - 0)) {
          change_num = 0
        } else if (value <= 1) {
          change_num = -(old_num - 1)
        } else {
          change_num = -old_num + parseInt(value)
        }
      }
      // 发请求更改数量
      try {
        this.add_shopGoods({ skuiD: id, skuNum: change_num }).then(() => {
          // 重新获取 购物车的 数组数据
          this.get_shopCart_goodsList_obj()
        })
      } catch {
        this.$Msg.error('修改失败')
      }
    }, 800),
    // 删除购物车的商品
    del_goods(id) {
      this.del_goods_inShopcart(id)
    },
    // 切换商品的选中状态
    input_checkedChange(id, event) {
      this.change_goodsChecked({ skuID: id, isChecked: event.target.checked ? 1 : 0 })
    },
    // 全选按钮状态变化
    On_All_checkedChange(e) {
      let status = e.target.checked ? 1 : 0
      this.Set_all_goods_checkedStatus(status)
    },
    // 删除所有已选中的商品
    del_all_checkedGoods() {
      this.del_All_checked_goods()
    },
    // 点击结算 去 交易详情页
    Go_tradeinfo_onfun() {
      this.$router.push('/tradeinfo')
    },
  },
  mounted() {
    // 发请求获取购物车数组
    this.get_shopCart_goodsList_obj()
  },
}
</script>

<style lang="less" scoped>
.cart {
  width: 1200px;
  margin: 0 auto;

  h4 {
    margin: 9px 0;
    font-size: 14px;
    line-height: 21px;
  }

  .cart-main {
    .cart-th {
      background: #f5f5f5;
      border: 1px solid #ddd;
      padding: 10px;
      overflow: hidden;

      & > div {
        float: left;
      }

      .cart-th1 {
        width: 25%;

        input {
          vertical-align: middle;
        }

        span {
          vertical-align: middle;
        }
      }

      .cart-th2 {
        width: 25%;
      }

      .cart-th3,
      .cart-th4,
      .cart-th5,
      .cart-th6 {
        width: 12.5%;
      }
    }

    .cart-body {
      margin: 15px 0;
      border: 1px solid #ddd;

      .cart-list {
        padding: 10px;
        border-bottom: 1px solid #ddd;
        overflow: hidden;

        & > li {
          float: left;
        }

        .cart-list-con1 {
          width: 15%;
        }

        .cart-list-con2 {
          width: 35%;

          img {
            width: 82px;
            height: 82px;
            float: left;
          }

          .item-msg {
            float: left;
            width: 150px;
            margin: 0 10px;
            line-height: 18px;
          }
        }

        .cart-list-con4 {
          width: 10%;
        }

        .cart-list-con5 {
          width: 16%;

          .mins {
            border: 1px solid #ddd;
            border-right: 0;
            float: left;
            color: #666;
            width: 6px;
            text-align: center;
            padding: 8px;
          }

          input {
            border: 1px solid #ddd;
            width: 40px;
            height: 33px;
            float: left;
            text-align: center;
            font-size: 14px;
          }

          .plus {
            border: 1px solid #ddd;
            border-left: 0;
            float: left;
            color: #666;
            width: 6px;
            text-align: center;
            padding: 8px;
          }
        }

        .cart-list-con6 {
          width: 11%;

          .sum {
            font-size: 16px;
          }
        }

        .cart-list-con7 {
          width: 12.5%;

          a {
            color: #666;
          }
        }
      }
    }
  }

  .cart-tool {
    overflow: hidden;
    border: 1px solid #ddd;

    .select-all {
      padding: 10px;
      overflow: hidden;
      float: left;

      span {
        vertical-align: middle;
      }

      input {
        vertical-align: middle;
      }
    }

    .option {
      padding: 10px;
      overflow: hidden;
      float: left;

      a {
        float: left;
        padding: 0 10px;
        color: #666;
      }
    }

    .money-box {
      float: right;

      .chosed {
        line-height: 26px;
        float: left;
        padding: 0 10px;
      }

      .sumprice {
        width: 200px;
        line-height: 22px;
        float: left;
        padding: 0 10px;

        .summoney {
          color: #c81623;
          font-size: 16px;
        }
      }

      .sumbtn {
        float: right;

        a {
          display: block;
          position: relative;
          width: 96px;
          height: 52px;
          line-height: 52px;
          color: #fff;
          text-align: center;
          font-size: 18px;
          font-family: 'Microsoft YaHei';
          background: #e1251b;
          overflow: hidden;
        }
      }
    }
  }
}
</style>